Structural metal-work



(No Model.)

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ARTHUR KRAUSE, OF JERSEY CITY, NEW JERSEY.

STRUCTURAL METAL-WORK.

Application filed June 14,1893. Serial No. 477,533. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR KRAUSE, of Jersey City, county of Hudson, andState of New Jersey, have invented a new and useful Improvement inStructural Metal-Vork, of which the following is a specification.

I My improved construction is especially adapted for columns but maybeused as a beam or girder.

In the accompanying drawings, Figure l is a square column constructedaccording to my improvement, having a portion broken away to show adetail of the construction. Figs. 2 and 3 are the separate plates orpieces of which the column is composed, and Fig. this a cross section ofthe completed column. Fig. 5 is a column composed on a similar principleof four beams.

To construct a column according to my improvement, I take plates ofmetal A A and B B. These are preferably ordinary iron or steel beamshaving the flanges a and b. I form along the center of each beam forhalf its length, a slot 0 c of a width equal to the thickness ofthe'plates. On each side of each slot, and extending beyond the latterthe entire length of the beam, is formed a row of holes cl (1'' of anysuitable size. The beams thus prepared are brought together preferablyat right angles to each other, in such a manner that the solid part ofthe web or plate of one beam lies within the slot in the other. The twobeams, thus interlocking, are then bound together and securely held by acasting of metal e which is cast as a hub around the joint where the twobeams intersect and which in casting flows through the holes (1 and d.The casting thus extends in one piece all around the line (though notnecessarily the whole length) on which the plates intersect and throughthe openings in the plates. It will be seen that a column may thus beformed of the ordinary beams without bending.

I do not wish to be understood as limiting myself to having the plate Ain the same piece with A or as having the plate B in the same piece withB, or to having them inter looking at the center provided the parts ofthe several plates adjacent to the center are embedded in the centralhub casting e.

In Fig. 5, I have shown the same principle employedin the constructionof a column from the four beams f, f, g, g In this case,four castmetalhubs h, 'i, j, 70 of the same character are employed.

I do not wish to be understood that the casting must extend continuouslyfrom one end of the column to the other. I prefer it unbroken as shownin the drawings, but am aware that this is not essential.

I have described the cast hub around the joints as the best means forconstructing my invention but I do not thereby wish to be understood aslimiting myself to that specific means.

I claim- 1. In combination, two metal plates interlocking with eachother at an angle, each provided with openings adjacent to their line ofintersection, and a cast metal hub inclosing their line of intersectionand extending through said openings, substantially as described.

2. In combination, the radial plates A, A, B, B and the central hub ofcast metal within which the portions of the plates adjacent to thecenter are embraced substantially as described.

3. In combination the structural sections halved together substantiallyat right angles, and means whereby they are secured in that position,substantially as described.

ARTHUR KRAUSE.

Witnesses:

J. E. GREEK, FRED S. KEMPER.

